comScore MMX® Ranks Top 50 U.S. Desktop Web Properties for March 2014

Pharmacy Sites Spring to the Rescue for Seasonal AllergiesAmericans Go Online to Book Their Spring Break and Summer Travel Plans

RESTON, VA, April 24, 2014 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly ranking of U.S. desktop web activity at the top online properties for March 2014 based on data from the comScore MMX® service. As spring finally arrived, many Americans embraced the warmer weather by booking their spring break and summer vacations on car rental and travel sites. In addition to the warmer weather, spring also brought along seasonal allergies, causing the Pharmacy category to produce the largest traffic gains this month.

comScore Top 10 Gaining Site Categories by Percentage Change in Unique Visitors (Desktop Only)March 2014 vs. February 2014Total U.S. – Home, Work and University LocationsSource: comScore MMX

Total Unique Visitors (000)

Feb-14

Mar-14

% Change

Total Internet : Total Audience

222,390

227,169

2

Health – Pharmacy

6,164

7,954

29

Travel – Car Rental

5,166

6,501

26

Lifestyles – Green

18,944

22,617

19

Retail – Tickets

20,848

24,626

18

Real Estate

56,357

66,145

17

Retail – Toys

12,606

14,634

16

Retail – Home Furnishings

34,663

40,004

15

Automotive – Resources

53,906

62,017

15

Travel - Information

50,865

58,359

15

Services - Instant Messengers

13,437

15,377

14

comScore Top 50 Properties (Desktop Only) March 2014Total U.S. – Home, Work and University Locations Source: comScore MMX

Rank

Property

Unique Visitors

(000)

Rank

Property

Unique Visitors

(000)

Total Internet : Total Audience

227,169

1

Google Sites

193,033

26

WebMD Health

35,321

2

Yahoo Sites

192,290

27

Wal-Mart

34,152

3

Microsoft Sites

174,078

28

ESPN

33,837

4

Facebook

137,895

29

Fox News Digital Network

33,058

5

AOL, Inc.

114,948

30

New York Times Digital

31,796

6

Amazon Sites

103,096

31

Dropbox Sites

30,993

7

Glam Media

84,842

32

Conde Nast Digital

30,649

8

Turner Digital

83,438

33

YP Local Media Network

30,232

9

CBS Interactive

75,794

34

T365 - Tribune

30,119

10

Wikimedia Foundation Sites

69,420

35

Netflix.com

30,112

11

Ask Network

66,759

36

Adobe Sites

29,563

12

Apple Inc.

66,484

37

Federated Media Publishing

29,402

13

eBay

64,905

38

Meredith Digital

28,689

14

Weather Company, The

64,071

39

Defy Media

27,846

15

Comcast NBCUniversal

62,371

40

Time Warner (Excl. Turner/WB)

27,647

16

About

61,428

41

Pinterest.com

26,739

17

Gannett Sites

57,517

42

Tumblr.com*

26,406

18

Linkedin

49,451

43

BuzzFeed.com

26,161

19

Answers.com Sites

48,184

44

Ziff Davis Tech

25,166

20

craigslist, inc.

41,024

45

WordPress.com*

24,955

21

Demand Media

39,652

46

TechMedia Network

24,235

22

Twitter.com

39,535

47

Disney Online

23,783

23

Viacom Digital

38,945

48

IDG Network

23,525

24

Hearst Corporation

37,791

49

AT&T, Inc.

23,202

25

Yelp

36,846

50

Dictionary.com Network

23,110

comScore Ad Focus Rankings (Desktop Only) March 2014 Total U.S. – Home, Work and University Locations Source: comScore MMX

Top 30 Syndicated Ad Focus Entities

Top 20 Ad Networks/Buy Side Networks

Rank

Property

Unique Visitors (000)

% Reach

Rank

Property

Unique Visitors (000)

% Reach

Total Internet : Total Audience

227,169

100.0

1

AddThis

221,768

97.6

1

Google Ad Network**

213,919

94.2

2

Yahoo Sites

192,290

84.6

2

Conversant (formerly ValueClick Networks)**

195,526

86.1

3

ShareThis

189,686

83.5

3

Advertising.com**

177,109

78.0

4

Google

185,508

81.7

4

Criteo**

176,227

77.6

5

Outbrain

177,719

78.2

5

Casale Media - MediaNet**

174,579

76.9

6

Facebook.com

135,765

59.8

6

RadiumOne**

171,741

75.6

7

YouTube.com

120,938

53.2

7

Microsoft Media Network US**

170,194

74.9

8

AOL, Inc.

114,948

50.6

8

Collective Display**

159,090

70.0

9

MSN

105,985

46.7

9

Genome from Yahoo**

157,601

69.4

10

Glam Media

84,842

37.3

10

Burst Media**

154,541

68.0

11

Amazon.com*

83,248

36.6

11

Cox Digital Solutions - Network**

150,483

66.2

12

Bing

80,594

35.5

12

Exponential - Tribal Fusion**

148,213

65.2

13

Ask Network

66,759

29.4

13

Specific Media**

133,342

58.7

14

Windows Live

64,385

28.3

14

Adconion Media Group**

127,235

56.0

15

About

61,428

27.0

15

Vibrant Media**

114,563

50.4

16

Weather Channel, The

59,393

26.1

16

Rocket Fuel**

111,801

49.2

17

Gannett Sites

57,517

25.3

17

Sourceknowledge Video Network**

98,751

43.5

18

Linkedin

49,451

21.8

18

CPX Interactive**

90,824

40.0

19

Answers.com Sites

48,184

21.2

19

Undertone Networks**

89,823

39.5

20

CNN

47,559

20.9

20

AdBlade Network**

86,083

37.9

21

Blogger

46,323

20.4

22

Demand Media

39,652

17.5

Top DSP/SSP/Ad Exchange Entities

23

Twitter.com

39,535

17.4

1

engage:BDR**

220,737

97.2

24

5min Media Platform

38,822

17.1

2

Rubicon Project**

219,789

96.8

25

Yelp.com

36,635

16.1

3

Fulcrum5**

173,273

76.3

26

CBS News

36,551

16.1

27

IMDb

35,874

15.8

28

Apple.com

35,708

15.7

29

WebMD Health

35,321

15.5

30

ESPN

33,837

14.9

Reach % denotes the percentage of the total Internet population that viewed a particular entity at least once in March. For instance, Yahoo Sites was seen by 84.6 percent of the 227 million Internet users in March. * Entity has assigned some portion of traffic to other syndicated entities.** Indicates that the entity is an advertising network.

About comScore MMXcomScore MMX provides industry-leading Internet audience measurement services that report details of online media usage, visitor demographics and online buying power for the home, work and university audiences on desktop computers across local U.S. markets and across the globe. comScore MMX reports are used by financial analysts, advertising agencies, publishers and marketers. comScore MMX syndicated ratings are based on industry-sanctioned sampling methodologies.

About comScorecomScore, Inc. (NASDAQ: SCOR) is a global leader in digital measurement and analytics, delivering insights on web, mobile and TV consumer behavior that enable clients to maximize the value of their digital investments. For more information, please visit www.comscore.com/companyinfo.